- You Will Get 500 Seeds Of Oregano Origanum Vulgare Herb Purple Butterfly Flower Seeds. - Description: - Name: Oregano. - Scientific Name: Origanum Vulgare. - Color: Pinkish Purple Flowers. - Plant Seeds: Outdoors After Frost / Indoors Weeks Before Last Frost. - Plant Height: 18 - 24". - Plant Spacing: 18 - 24". - Bloom Time: Summer. - Hardiness Zone: 5 – 10. - Light Requirements: Sun - Part Shade. - Soil & Water Preferences: Average.